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@@ -3,11 +3,14 @@ ADB Protocol |
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Resources |
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ADB - The Untold Story: Space Aliens Ate My Mouse |
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http://developer.apple.com/legacy/mac/library/#technotes/hw/hw_01.html |
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Apple IIgs Hardware Reference Second Edition [p80(Chapter6 p121)] |
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ftp://ftp.apple.asimov.net/pub/apple_II/documentation/Apple%20IIgs%20Hardware%20Reference.pdf |
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ADB Keycode |
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http://72.0.193.250/Documentation/macppc/adbkeycodes/ |
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http://m0115.web.fc2.com/m0115.jpg |
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[Inside Macintosh volume V, pages 191-192] |
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ADB Signaling |
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http://kbdbabel.sourceforge.net/doc/kbd_signaling_pcxt_ps2_adb.pdf |
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ADB Overview & History |
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@@ -61,9 +64,9 @@ Commands |
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3: mice |
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Registers: |
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0: application(keyobard/mice use to store its data.) |
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0: application(keyobard uses this to store its data.) |
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1: application |
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2: application |
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2: application(keyboard uses this for LEDs and state of modifiers) |
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3: status and command |
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@@ -111,15 +114,17 @@ Communication |
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keep low for 300us to request. |
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Keyboard data(register0) |
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This 16bit data can contains 2 keycodes and 2 released flags. |
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First keycode is palced in upper nibble. When one keyocode is sent, |
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lower nibble is 0xFF. |
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Keyboard Data(Register0) |
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This 16bit data can contains two keycodes and two released flags. |
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First keycode is palced in upper byte. When one keyocode is sent, |
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lower byte is 0xFF. |
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Release flag is 1 when key is released. |
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15 14 . . . . . 8 7 6 . . . . . 0 |
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| |keycode1 | |keycode2 |
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|released(1) |released(1) |
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1514 . . . . . 8 7 6 . . . . . 0 |
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| | | | | | | | | +-+-+-+-+-+-+- Keycode2 |
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| | | | | | | | +--------------- Released2(1 when the key is released) |
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| +-+-+-+-+-+-+----------------- Keycode1 |
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+------------------------------- Released1(1 when the key is released) |
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Keycodes: |
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Scancode consists of 7bit keycode and 1bit release flag. |
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@@ -131,4 +136,24 @@ Keyboard data(register0) |
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the switch has a special scancode 0x7F7F, so you can |
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also read from Data line. It uses 0xFFFF for release scancode. |
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Keyboard LEDs & state of keys(Register2) |
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This register hold current state of three LEDs and nine keys. |
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The state of LEDs can be changed by sending Listen command. |
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1514 . . . . . . 7 6 5 . 3 2 1 0 |
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| | | | | | | | | | | | | | | +- LED1(NumLock) |
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| | | | | | | | | | | | | | +--- LED2(CapsLock) |
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| | | | | | | | | | | | | +----- LED3(ScrollLock) |
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| | | | | | | | | | +-+-+------- Reserved |
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| | | | | | | | | +------------- ScrollLock |
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| | | | | | | | +--------------- NumLock |
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| | | | | | | +----------------- Apple/Command |
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| | | | | | +------------------- Option |
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| | | | | +--------------------- Shift |
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| | | | +----------------------- Control |
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| | | +------------------------- Reset/Power |
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| | +--------------------------- CapsLock |
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| +----------------------------- Delete |
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+------------------------------- Reserved |
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END_OF_ADB |